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i5-2500k Overclocked. Question about RAM.

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  • Overclocking
  • Water Cooling
  • RAM
  • Intel i5
  • Computers
  • CPUs
  • Corsair
Last response: in Overclocking
October 17, 2013 4:09:54 PM

Hey guys, I have my cpu overclocked to 4.5ghz stable at 1.290cv.

I have 32gb of RAM (Corsair Vengeance CMZ8GX3M1A1600C10)
They're setup in my BIOS as 1600hz, 10 10 10 27, 1T, DRAM V 1.500, Auto everything else.

It's felt like that my OC'd cpu has reduced my RAM speed a smidgen. Is there any safe OC I can do to them that will boost them back up but still prevent them from damage. if so, could you please post some settings I can possibly boost them too.

using a z77x-ud5h mobo (gigabyte), if that helps anyone.

More about : 2500k overclocked question ram

a c 1207 à CPUs
a c 254 K Overclocking
October 17, 2013 4:17:16 PM

So how has it slowed the ram down?
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October 17, 2013 4:25:39 PM

Well I'm still learning.... but from stock, it loads my windows start up faster than it does overclocked. Not a lot but slightly noticeable.

it could just be something on my ssd doing that but i dont thinks so....only have windows op and couple mmos on it....rest on hdd
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a b K Overclocking
a b à CPUs
October 17, 2013 4:31:42 PM

Keith Strout said:
Well I'm still learning.... but from stock, it loads my windows start up faster than it does overclocked. Not a lot but slightly noticeable.

it could just be something on my ssd doing that but i dont thinks so....only have windows op and couple mmos on it....rest on hdd


Time both from the moment you push the on button. You may just be feeling a placebo effect.
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October 17, 2013 4:44:09 PM

No, they're running at the same speed. Still feels like its loading a little slower than it was originally. Idk probably nothing.
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a c 1207 à CPUs
a c 254 K Overclocking
October 17, 2013 6:37:42 PM

Yea did not make any sense that it slowed down. During boot BIOS runs some checks and OC would hardly matter.
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October 17, 2013 9:05:01 PM

ok, for whatever reason my ram is set at 1600MHz but CPUID is only reading them at 800MHz..... I have XMP turned on in my bios but wheather its on or off, it still shows at 800MHz

Like I said, still a beginner....I'll upload a picture.
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a c 1207 à CPUs
a c 254 K Overclocking
October 17, 2013 9:38:29 PM

CPU-Z reports actual frequency 800 means with DDR or Dual Data Rate effective 1600MHz which is correct for your setting.
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a c 351 K Overclocking
a c 168 à CPUs
October 18, 2013 4:24:05 AM

Keith Strout said:
Hey guys, I have my cpu overclocked to 4.5ghz stable at 1.290cv.

I have 32gb of RAM (Corsair Vengeance CMZ8GX3M1A1600C10)
They're setup in my BIOS as 1600hz, 10 10 10 27, 1T, DRAM V 1.500, Auto everything else.

It's felt like that my OC'd cpu has reduced my RAM speed a smidgen. Is there any safe OC I can do to them that will boost them back up but still prevent them from damage. if so, could you please post some settings I can possibly boost them too.

using a z77x-ud5h mobo (gigabyte), if that helps anyone.


For you to be able to run 4.5ghz stable at 1.290v, is very good I have a test for you to try but it will seem stupid to you because it's opposite of your question in your understanding.

The 2500K CPUs memory controller was designed to run 1066mhz or 1333mhz memory speeds which means speed wise you are overclocking the memory controller at 1600mhz.

Forget the XMP profile and try this, manually set your memory speed to 1333mhz (slower speed yes but tighter timings), test at 7,7,7,21 2T 1.5v see if it will run those timings, if not relax the timings to 8,8,8,24 keep the 2T setting for all the changes, or 9,9,9,27.

If you can run these memory settings it will lower your CPU load temperature and possibly allow you to run a higher multiplier, if you want to.

You won't be overclocking your CPU memory controller and may see a performance gain by the tighter memory timings even at lower memory speeds.



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a b K Overclocking
a b à CPUs
October 18, 2013 4:38:03 AM

I have noticed this to be true as well the corsair memory i bought has a profile for 1600Mhz but all the timmings go up with that setting at 1333Mhz the timmings are tighter and the system seems to run more smothly at that setting than at 1600Mhz only my openion beause the benchmarks say otherwise but i do not care i run it at the 1333Mhz anyway.
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a c 356 à CPUs
a c 76 K Overclocking
October 18, 2013 7:42:41 AM

I have a very similar setup to you and I manage to run my ram at 1866 (or something like this) at standard timings.
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